Spot lamp



Feb; 14, 1928. 1,659,013

E. G. K. ANDERSON SPOT LAMP I Filed Oct. 25, 1924 2 Sheets-Sheet. i

,zw-fmwk Feb. 14, 1928. 1,659,013

E. G. K. ANDERSON SPOT LAMP Filed t. 25. 1924 2 Sheets-Sheet 2 N uniiimwPatented Feb. 14, 1928.

UNITED STATES PATENT OFFIQE-I:

Ermsre. AK. ANDERSON, or nvans'ron, I LINors, AssrG Noavro APPLETON mama COMLEANY, A CORPORATION or rumors.

sro'r LA P."

Application filed October 25, 1924; Serial 'no. 745,7eaf

This invention relates to improvements in spot lamps for automobiles,boats and for' other uses, and to improvements in a switch" forcontrolling the lamp clrcuit thereon. I

My improvements are shown as appl ed to a demountablelamp wherein theconductor cord which connects the lamp with a source of current isadapted to be wound on and unwound from a reel duringits"normaloperation as a trouble lamp, and is contained on the reel when the lampis adjusted to its normal fixed position, and wherein the lamp circuitcontrol switch is associated with a manipulating handle for the lampwhen the lamp is mounted on its support to swing the lamp in positionsto therefrom. .v

A purpose of the invention is to provide a simple means by which'thereel for the cord can be readily placed in a structure whichconstitutes; part of'the lamp casingfia'nd direct the light rays whichis so arranged that it may be readily applied to or disconnected fromthe lamp casing' The object of the invention is to produce a novelswitch'mechanism for the lamp circuit which is constructed to adapt arethe peculiar relation of the spring rewindin'g reel and the supportingand'enclosihgfcasingj for the lamp and to conveniently?associateit withthe manipulating handle for umnmp:

In the drawings showing one embodiment of my 1I1V611t10n,

Figure 1 1s a part rear elevationandipart QTc nstitutes the bottom ofthe lamp cord circuit switch embodying my inventiom 7 As shown in thedrawings 10 designates a. sheet metal rearwardly coiled. casing'whlch isopen at its front endandfinwhich the rewinding mechanism and switchcontained. which is attached at its forward flanged. edge between theflanged open endrof the casing,

within a rolled open ring 12, andthe edge of the usual crown lens 13.Aspur '14 (Figure 4) of the reflector holds said reflector from turning.

v the shell 25 and the section on the 11 designates an interiorreflector from. rotation by being extendedinwardly through'an opening,in the center of "the reflector and swaged over the margin of saidopenmg; as at 23. The front wall 17 of the barrel is formed with abearing boss 17' in which the sleeve 22 closelyifits. The outer turn ofthe spring is connected to the flange of thebarrel by means of a rivet24: andthe barrel-turns about said sleeve.

2 5 designates a part cylindrical shell in" rear of the reflector whichconforms gener ally to the rear surface of the reflector ll. It isformed at its rear end as an annular flange or tube 27 concentric to theaxis of the 1 barrel, one part extending throughopenings in and clinchedover theother part. A. spacer rn1g'28 is applied over theboss' 17 tohold the shell% away from frictional contact with the reflector shell.The t flange or tube reel; and the sides of said reel are formed by p 7forward wallof the spring barrel;

, Contained within said sleet/e22 is the usualsoeket 30 toirecei ve thebase 31 of the lamp; ordinarily connected thereto by the v I lrno'ivnjbayonet lock." A spring 32 is en Figures 5, 6 and 7 are details 'ofthelamp p V p between'the base of thelamp and an insuclosed 'in the shell30 and is compressible lating washer] 33fflxed .to and within the outerend of' the shell 30, 'asby turned-in flange or burr 33", shown'inFigure 2. In-v wardly beyond said shell 30fand' of larger diametenthan'the said latter shell, and closed I againstthe end of the shell, is awasher 36 made of insulating material,

38 designates a washer which is shown as made ;offcup, shape, and isfitted I over the forwa'rdlendoof a tubularinsulating body orv shaft 39,the latter extending backwardly through a short hollow lug 40 that isfixed to the rear end of the casing 10. Said lug is also removablyconnected and clamped to the body or shaft 39 by means oi a screw 41.ient manual means for manipulating the lamp to turn it on its universaljoints.

Within the outer end of the hollow shalt 1-39 is a sleeve 42 which isext-eriorly threaded for a portion of its length (Figures 5 and 6) forthreaded engagement with the bore of said shaft. Said sleeve is formedat its outer end with an enlarged socketed portion 46, as shown inFigures 2, 5 and ti, lVithin said sleeve. 42 is mounted, for axialreciprocation, :1 pin 43.

Said latter pin is provided at its outer end with a head 44 thatnormally bears against the central contact of the lamp base to close thelamp circuit. A spring 45 disposed between said head 44 and the bottomof said socketed portion 46 of the sleeve 42 tends to hold the head 44resiliently pressed against the center contact of the lamp base.

Said pin 43 is made anintegral part of a fin 47 which extends a distanceinwardly beyond said sleeve 42 and said tin is torn'ied at its outeredge with double beveled surfaces 48 (Figures 5, 6 and 7). The saidsleeve 42 is fixed to the insulating body or shaft 39 by the internalscrew thread connection mentioned, but is unthreaded for rotationalengagementin the cup or washer 38 and the insulating washers 33, 36, asshown in Figure 2. Said lint-breaded cylindric part of the sleeve 42extends through and is in electric contact with a metal washer 49,between which and the washer 38 is clamped a conducting brush 50 thatconstitutes, with said washers 38, 49, the sleeve 42, the pin 43, andits head 44, part of thepath of current to the central contact of thelamp. Separation of said head from the lamp terminal base breaks thispath, or opens the lamp circuit.

51 designates a switch actuating rodwhich is mounted for rotation, butnon-axial, movement in the hollow insulating shaft or body 39.- T heouter end of said pin 51 is formed with fork arms 52 between whichenters and slides the fin oi? the pin 47 (Figures 2 and T). The rod Siis threaded at itsvouter end 5:5[into a bushing 54 that is molded in ahollow plug 55 which is axially disposed with respect to the insulatingbody or shaft 35). A locking bolt 56, having a. slotted head 57, is alsothreaded into the. inner end or said bushing 54 to bear at its outer endagainst the inner end of the rod 51 and thereby to lock said rod endwisefixed in the shaft or hollow body 39.

The said sleeve 42 is provided at its inner end with diametricallydisposed V-shaped notches into which fit the bevels 48 of the 47. \Vhenthe bevels of said fin 47 0c- The hollow lug 4O constitutes conven-'cupy the deepest parts of the notches 60, the head 44 of the pin 43 is,by the spring extended beyond the enlarged end of said sleeve, as shownin Figure 6. At this time said spring 45 holds the head 44 pressed.against the lamp base terminal and closes the lamp circuit. Upon turningthe rod 51, it acts, through the interlocking arms 52 and fin 47, tocause. the bevels at the end of the lin 47 to ride outwardly on theinthe said beveled edge of the fin will ride on the inner end face ofthe sleeve, whereby the parts will be looked in circuit-openingposition. Preferably, shallower notches 64, angularly spaced from thenotches ($0 on the end face of said sleeve 42, are provided in order tohold the parts to prevent accidental closing of the lamp circuit.

The wires included in the cord C, and embodying the wires 0, c are,respectively. grounded to the spring casing and connected to a lug G5,which is fixed to the back plate 20 of the spring barrel, the conductor0 being connected to the sleeve 42 through the means of the conductingbrush 50 that is fastened to said lug and is forked to embrace thenut-breaded part of said sleeve 42.

Referring now to the universal mounting for connecting the lampstructure to a fixed support, the same is made as follows:

70, designate the jaws of a bracket which are adapted to be'clamped overa support, as the wind shield frame of an automobile. Clamping pressurecan be effected by abolt 71 which extends through the ears of said jaws.Located between said jaws and clamped thereon by the bolt 71 are twoarms 75 of a sleeve 76. VVit-hin said sleeve is a pivot bolt 77. Saidlatter bolt extends through ears 78 of a fitting 7 9, which fittingterminates in asplit sleeve 80, whose axis is l at right angles to theaxis of the pivot bolt 77. Extendinglaterally from and fastened in anysuitable manner to the casing at its larger diameter is a hollow arm 82,the outer cylindrical end 83 of which extends into and l is fittedwithin said split sleeve 80. The split sleeve is riveted at 85 to a.metal ring clasp 86 that extends around the split sleeve 80 andterminates in a box-like enclosure 87, within. which nonrotativelv fitsa nut 88 threaded to receive a thumb screw 89. Vhen said thumb screw isturned downwar dly through the nut 88, which latter is heldnon-rotatively by its engagement with the enclosure 87, the force ofthenut acts ill) and. reacts on the split sleeve 80 and clasp 86 to closeit against the cylindric extension 83 of the arm 82. This has the effectof locking the lamp structure from turning freely on the pivot,constituted by the parts 83 and 80, and will hold the lamp normally inposition, while permitting it, by a moderate manual force to be turnedina vertical plane.

The conductor cable C leads from the reel and outwardly through thehollow arm 82, and thence downwardly through an opening in one of thearms of the fitting 79 to a source of current. Said cable may be knottedat C to prevent stress occasioned by pulling out the cable from beingtransmitted to the connections of the cable cords described. Said cablemay also be protected exterior to the mounting by a flexible metalsheath 91.

By reference to Figure 2, it will be observed that the member '39 isconnected, through the sleeve 42, the shoulder 46, washer 33 andinternal spurs or flange 33' to the socket 30 so that thereby the lamp31 r can be focused in the axis of the reflector 11 by endwise movementof said member 39; and can be locked in proper focal adjustment by thescrew 41.

I claim as my invention:

y 1. In combination with a lamp structure embracing a sleeve to receivea lamp base, of a tubular body to the rear of said sleeve in axialalignment therewith, a guide sleeve fixed in said tubular body, a pinguided in said sleeve towards and from, and normally spring pressedtoward,-the lamp base ter-s minal, anda pin actuating member rotatablein said body andinterlocked to and adapted of a tubular body to-the rearofsaid sleeve i in axial alignment therewith, a guide sleeve fixed insaid tubular body, a pin guided-m said sleeve towards and from, andnormally springfpressed toward,-the lamp base ter- 7 minal, camconnection betweensaid pin and the outer end of sa d sleeve, and meansto rotate said pm and cooperating with sard cam connection to" withdrawsaid pinfrom the lamp base terminal to open the lamp circuit.

ment of the pin, and an operating device for the pin mounted in saidtubular body and interlocked with the pin so as to permit the pin to berotated by the operating device while the pin is moving in the directionof its length.

In witness whereof I claim the foregoing as myinvention, I hereuntoappend my signature this 14th day of October, 1924. ERNST G. K.ANDERSON.

3. In combinationwith a lamp structure

